Step27: simple search

Author: zmrenwu

Diff for: README.md

@@ -147,6 +147,7 @@ tutorial 分支为项目的主分支，每一篇教程的代码都和历史提
 24. [稳定易用的 Django 分页库，完善分页功能](https://www.zmrenwu.com/courses/hellodjango-blog-tutorial/materials/82/)
 25. [统计各个分类和标签下的文章数](https://www.zmrenwu.com/courses/hellodjango-blog-tutorial/materials/83/)
 26. [开启 Django 博客的 RSS 功能](https://www.zmrenwu.com/courses/hellodjango-blog-tutorial/materials/84/)
+27. [Django 博客实现简单的全文搜索](https://www.zmrenwu.com/courses/hellodjango-blog-tutorial/materials/85/)
 
 ## 公众号
 <p align="center">

Diff for: blog/urls.py

@@ -9,4 +9,5 @@
     path('archives/<int:year>/<int:month>/', views.ArchiveView.as_view(), name='archive'),
     path('categories/<int:pk>/', views.CategoryView.as_view(), name='category'),
     path('tags/<int:pk>/', views.TagView.as_view(), name='tag'),
+    path('search/', views.search, name='search'),
 ]

Diff for: blog/views.py

@@ -1,4 +1,6 @@
-from django.shortcuts import get_object_or_404
+from django.contrib import messages
+from django.db.models import Q
+from django.shortcuts import get_object_or_404, redirect, render
 from django.views.generic import DetailView, ListView
 
 from pure_pagination.mixins import PaginationMixin
@@ -56,3 +58,15 @@ def get(self, request, *args, **kwargs):
 
         # 视图必须返回一个 HttpResponse 对象
         return response
+
+
+def search(request):
+    q = request.GET.get("q")
+
+    if not q:
+        error_msg = "请输入搜索关键词"
+        messages.add_message(request, messages.ERROR, error_msg, extra_tags="danger")
+        return redirect("blog:index")
+
+    post_list = Post.objects.filter(Q(title__icontains=q) | Q(body__icontains=q))
+    return render(request, "blog/index.html", {"post_list": post_list})

Diff for: templates/base.html

@@ -84,8 +84,8 @@ <h1><a href="{% url 'blog:index' %}"><b>Black</b> &amp; White</a></h1>
         <div id="header-search-box">
           <a id="search-menu" href="#"><span id="search-icon" class="ion-ios-search-strong"></span></a>
           <div id="search-form" class="search-form">
-            <form role="search" method="get" id="searchform" action="#">
-              <input type="search" placeholder="搜索" required>
+            <form role="search" method="get" id="searchform" action="{% url 'blog:search' %}">
+              <input type="search" name="q" placeholder="搜索" required>
               <button type="submit"><span class="ion-ios-search-strong"></span></button>
             </form>
           </div>